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1W-d!! A. MILLOGHAU, OF kNEW YORK, N. Y., ASSIGNOR TO- E. N. PERLEE, 0F JERSEY CITY, NEW JERSEY.

Letters Patent No. 72,068, dated December 10, 1867.

IMPROVEMENT IN THE MANUFACTUEE OI' LAMP-BLACK.

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O ALL WHOM IT MAY CONOERN:

Be it known that I, ADOLNI MILLDCUAU, of the city and State of New York, have invented and made a. certain new und useful Improvement in the Manufacture ot' Lamp-Bleek; und I do hereby declare the following te be o. full, clear, and exact' description of the said invention, ref'crenoe being had to the annexed drawing, making part of this specification, wherein- Figure 1 is on elevation of my seid invention, and

Figure 2 is n. cross-'section7 illustrating a. modification of said in rention.

Similar marks of reference denote the same ports.

Heretofore it hn's been usual to allow the smoke from the combustion ci' carbonoeeous substances to enter u chamber or room, und there condense; but the quality of lamp-black produced in this manner is inferior, and has none of the brillinnoy of that produced by my improvement, which consists in bringing the ilume into contant with c. surface that is constantly kept suiliciently cool to condense the lomp-block upon the some.

Heretoiore small quantities of lmnp-black have been produced upon :1 cold'surfnee, such. as a piece of sheet metal or glass, but there was no provision for continuing the operation, und as soon as the surface became heated the larnpblack was injured in its color.

Thenuture of my said invention will be morefully understood by reference to the annexed drawing. In this, a represents o pnn or boiler, to which water is supplied gradually by e pipe,-Z1, ond allowed to poss off from the overdow c; or, if n closed vessel is used, oir may be forced through the vessel. In either ease the object is to .keep tho'snid vessel suiiciently cool for e. uniform and superior quality of lump-bisch to be condensed on its under surfdee. The flame may be produced from any desired Vcharacter of lomp or vessel. In iig. 2, I

l herve shown o. lamp, d, and in tig. 1 n. vessel, e, supplied graduully'with oil, or other carbonaceous material, from the vessel f, through the pipe g, the same burning upon the surfsce,'and its smoke being condensed upon the vessel. The lump-black may be scraped off into o. receptacle below the Same, as at lz; or a. trough-shoped scraper may be employed, to be drnwn across the surface frequently, toremovo the lmnp-black. into the trough; or said scraper-may be attached, at one end, in thecentre of a. round vessel, lend be revolved below it from time to time to Ascrape the black into thetrough, whence it may be removed by a. hoe or other suitable device.

What I claim, sind desire to usecure by Letters Patent, is

The method herein speciiied of manufacturing lamp-black by condensing the earbonoceous vapors upon a. surface, directly over the dome, that is constantly kept suiiiciently cool by artificial means.

In Witness whereof, I have hereunto sot my signature, this 12th doy of October, A. D. 1867.

A. MILLOGHAII.

Witnesses:

Cass. H. Suma, Guo. D. WALKER. 

